Feasibility and Parameter Sclection for Unloading System of Injection Pump on Light 0il Tank Car

With utilizing the methods of system analysis and economic comparison, the paper analyzes and discusses efficiency, feasibility and selecting problem of designing parameter for the unloading system of injection pump, Based on the viewpoint and the formulas given in the article, the system efficicncy could be reached at more than 70% if some parameter concerned had been under control.